Hello, I have found that the backup server of my client is never used when the his main server is down.
Another strange behaviour is that the reject is not answered on a timeout but on receipt of the next authentication request, even if it comes one hour after ! To solve the problem I have changed synchronous to "no". Synchronous mode is broken ? (I use 0.9.3) - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html